[TenTec] Titan 425 power supply woes

[A R]

Jim,
That makes a LOT more sense. I really saw no way that an external fault could have caused the R2 (as mis-identified on my board and schematic) to fail. Now, with your schematic information, it looks like perhaps the 20 ohm 25W resistor could have been smoked if the K7A contacts never "made" and the surge protection 20 ohm resistor was in-circuit continuously. K7 tests are definitely in order. Thanks!

Allen--W7GIF
----- Original Message -----
From: Jim Brown<mailto:k9yc at audiosystemsgroup.com>
To: tentec at contesting.com<mailto:tentec at contesting.com>
Sent: Monday, January 29, 2018 6:57 PM
Subject: Re: [TenTec] Titan 425 power supply woes

On 1/29/2018 1:18 PM, A R wrote:
> Thanks in advance for any help.

Schematics are on my website. Scroll down. k9yc.com/publish.htm

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